Quick question from a noob on water pump replacement:
I just bought a 2009 328i xDRIVE with semi-high mileage, and I'm going to be replacing the water pump, thermostat, radiator hoses, reservoir tank, and do a coolant flush.
BUT, I'm wondering if the e90 M3 water pump is compatible with this engine? And if so, is it worth purchasing over the stock water pump?
As background, I just noticed the M3 water pump on Turner's site, and it mentions an 'upgraded aluminum impeller' - I don't know if this would improve reliability...see links below.
M3 e9x water pump:
http://www.turnermotorsport.com/p-55...-impeller.aspx
Regular e9x water pump:
http://www.turnermotorsport.com/p-27...53-engine.aspx